HERPES HARDCORE Flashcards
Alphaherpesviruses are host specific slowly multiplying (>24hrs) viruses
F
Alpha = Fast replication → Rapid destruction of host cells + Boarder Host Range
Beta = Slower replication + More limited host range
Gamma = Variable replication → Very limited host range
Some herpesviruses have a broad host spectrum (euryxen
T
alphaherpesvirinae
Herpesviruses are typically stenoxen viruses, but there are significant exceptions
T
Because the genome of herpesviruses is very stable, no attenuated mutant vaccine strains are available
F
Not stable we have deletion and point mutations on the genome
Infectious bovine vulvovaginitis virus strains cause abortions and foetal deformities
F
Sporadic abortions yes but not together with IPV
Also never foetal deformities (monsters)
The use of marker vaccines can help the eradication of infectious bovine rhinotracheitis virus
T
Marker vaccines together with selection procedure if seropositive are more than 10% of the total tested
Antibodies against infectious bovine rhinotracheitis virus (IBRV) might be detected in the milk
T + blood/serum
Also sampling for direct detection can be:semen + vaginal discharges + ocular discharges + nasal discharges
Conjunctivitis and blepharitis are signs of infectious bovine rhinotracheitis
T
The infectious bovine rhinotracheitis virus (IBRV) causes haemorrhagic gastroenteritis
F
IBR causes cns (L-TOD) + resp + repro
Infectious bovine rhinotracheitis virus also causes mastitis in cows
F
Infectious Bovine Rhinotracheitis virus frequently causes encephalitis in old cow and bulls
F
in young animals not old
Infectious Bovine Rhinotracheitis can be endemic on cattle farms
T
Infectious Bovine Rhinotracheitis in 6-month-old calves usually causes pneumonia
T
bronchopneumonia
Infectious Bovine Rhinotracheitis may cause inflammation of conjunctiva
T
yes and ocular discharge with the virus for swabs
In Hungary the IgE-negative marker vaccine is to be used in the control of Infectious Bovine Rhinotracheitis
T
Infectious Bovine Rhinotracheitis is rapidly spread within the herd
F
IBR slowly
MCF rapidly
Infectious Bovine Rhinotracheitis spreads slowly within a herd
T
We can see characteristic clinical signs of Infectious Bovine Rhinotracheitis in day-old calves
F
Infectious Bovine Rhinotracheitis is rare, BHV-1 only affects cattle
F+ other ruminants too
In the transmission IBRV, the most important route is the germinative route
F
aerogenous
Genital form of IBR is often followed by abortion
F
IPV never occurs with abortion
Bovine Herpes virus 2 frequently causes abortion
F
affects the teats and the udder and rarely spread to perineal region or generalised Pseudo lumpy skin disease
Bovine herpesvirus 2 is the most frequent primary cause of mastitis in cattle
F
most frequent is bacterial infections?
Inclusion body rhinitis is predisposing to fatal respiratory disease in pigs
T
Bacterial rhinitis?
Sheep should be immunised against malignant catarrhal fever virus
F
Malignant catarrhal fever is quickly spreading from cattle to cattle
F
Malignant Catarrhal Fever does not occur in Europe
F
mainly usa africa and asia but sporadically in EU
Malignant Catarrhal Fever spreads slowly within a cattle herd
F
IBR slowly
MCF Fast
